Circular Drum Cymatics (2D)

This 2D top-down simulator visualizes cymatics on a circular drumhead rather than a square plate: the membrane locks into whichever resonant mode (m nodal diameters, n nodal circles) sits closest to your chosen drive frequency, and the entire surface is rendered as a diverging color heightfield instead of physically-simulated sand grains — crests in warm color, troughs in cool color, and the nodal lines themselves appearing as dark rings and spokes exactly where a real membrane would stay motionless. Sweep the frequency to jump between modes, raise the amplitude to see the color contrast intensify, or step mode-by-mode with the Prev/Next buttons and watch the nodal pattern's symmetry change from simple rings to intricate rose-like figures.